Re: Server invokes method at client side

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From: Stephen Crawley
Date: Thu, 19 Nov 1998 00:00

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In article <364A2668.BB9D4A1F@fedex.com>,
rgholland  <rgholland1@fedex.com> wrote:
>I have been programming with a couple different Smalltalk ORBs and
>the issue of who is the client and who is the server and the idea
>of a callback has never come up. At any moment an object can be a 
>client making a request and the next it will service a request,
>(peer-to-peer). With a Java/C++ ORB is a server object making a callback
>to a remote client different than a client making a remote invokation on
>a server object?

The mechanisms are the same.

However, there is one area where you need to be a bit careful.  If you
don't have callbacks, your client code can be implemented as single
threaded.  With callbacks, you at least need to consider thread safety
and deadlock issues ... depending on what the callbacks do.

-- Steve

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From: crawley@dstc.edu.au (Stephen Crawley)
Subject: Re: Server invokes method at client side
Date: 1998/11/19
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